SN49B14B Equivalent & Substitute Parts

Part Overview

The SN49B14B is a 6.35mm (0.250", 1/4") stereo phone jack connector manufactured by Switchcraft Inc., designed for headphone and audio applications. This right-angle, through-hole solder connector features three conductors (TRS configuration) with two internal switches and includes mounting hardware. The part is currently active in production with ROHS3 compliance and is suitable for applications requiring reliable audio signal connectivity with mechanical switching functionality.

Substitute parts are identified when design requirements, inventory constraints, or application-specific needs necessitate alternative connector options that maintain electrical and mechanical compatibility within the same product category.

Substiute Parts

SN49B14B

Switchcraft Inc.In Stock: 694SN49B14B Datasheet

Current PartRFQ

SN37A14B

Switchcraft Inc.In Stock: 1716SN37A14B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SN37A14B qualifies as a direct substitute for the SN49B14B based on the following critical parameters that determine functional and mechanical compatibility:

• Connector Type: Both are phone jacks
• Gender: Both are female connectors
• Signal Lines: Both support stereo (3 Conductor, TRS) configuration
• Mating Diameter: Both use 6.35mm (0.250", 1/4") headphone standard
• Number of Positions/Contacts: Both feature 3 conductors with 5 contacts
• Internal Switches: Both include two switches
• Mounting Type: Both are through-hole, right-angle configurations
• Termination: Both use solder termination
• Shielding: Both are unshielded
• Contact Material: Both use nickel-plated brass contacts
• Housing Material: Both use thermoplastic housing
• Body Color: Both are black
• Regulatory Compliance: Both are ROHS3 compliant and REACH unaffected

Differences in packaging (bulk vs. standard), included features (board guide and cover vs. mounting hardware and thread lock), and thread size specification do not affect electrical or core mechanical compatibility for standard audio jack applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SN49B14B and SN37A14B are active products from Switchcraft Inc. with identical regulatory compliance profiles (ROHS3 compliant, REACH unaffected, EAR99 classification). Selection between these parts should be based on:

• Packaging requirements: SN49B14B is available in standard packaging; SN37A14B is supplied in bulk packaging
• Included accessories: SN49B14B includes mounting hardware and thread lock; SN37A14B includes board guide and cover
• Inventory availability: SN37A14B has higher stock levels (1639 pcs vs. 672 pcs)
• Application-specific mounting needs: Thread size specification (3/8"-32) is defined only for SN49B14B

For applications where thread size specification is critical, SN49B14B is the specified part. For general audio jack applications where the core electrical and mechanical parameters are the determining factors, SN37A14B provides equivalent functionality with enhanced availability.

Frequently Asked Questions (FAQ)

Q: Can SN37A14B be used as a direct replacement for SN49B14B in existing designs?

A: Yes. Both connectors share identical electrical specifications (stereo TRS configuration, 6.35mm mating diameter, nickel-plated brass contacts) and mechanical mounting characteristics (through-hole, right-angle, solder termination). The primary differences are packaging format and included accessories, which do not affect connector performance in standard audio applications.

Q: What is the significance of the thread size specification for SN49B14B?

A: The 3/8"-32 thread size specification for SN49B14B indicates the panel mounting thread standard. This parameter is not specified for SN37A14B. If your application requires a specific thread size for panel mounting, verify compatibility before substitution.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. Both share the same HTSUS code (8536.69.4040), indicating identical tariff classification.

Q: What accessories are included with each connector?

A: SN49B14B includes one connector, one nut, and one washer. SN37A14B includes one connector, one nut, and one washer, plus a board guide and cover. The core connector assembly is identical; additional features in SN37A14B provide supplementary mounting and protection options.

Q: How do the internal switches function in these connectors?

A: Both connectors feature two internal switches as part of the TRS (Tip, Ring, Sleeve) stereo configuration. These switches enable automatic detection and switching of audio signals when a plug is inserted, a standard feature in professional and consumer audio applications.

Q: Is shielding available for these connector models?

A: No. Both SN49B14B and SN37A14B are unshielded connectors. If electromagnetic shielding is required for your application, alternative connector models from the Switchcraft product line should be evaluated.